ASTROSAT CZTI

Data Quality Report

Orbit 16950

Creation date: 2024-06-27T17:29:55.056133
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A05_206T01_9000002518_16950cztM0_level2.evt modeM0/AS1A05_206T01_9000002518_16950cztM0_level2_quad_clean.evt
Size (bytes)460,785,600101,900,160
Size439.4 MB 97.2 MB
Events in quadrant A4,090,617661,856
Events in quadrant B3,298,063686,897
Events in quadrant C3,117,866667,561
Events in quadrant D3,043,457653,105

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158991
B0133841
C0125531
D0126491

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59683005.026810%
B5969641.072206%
C59691101.842855%
D5969651.088960%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7249 5970 165 165 2.28% 2.76%
B 7250 5971 3 3 0.04% 0.05%
C 7250 5971 1 1 0.01% 0.02%
D 7250 5971 21 21 0.29% 0.35%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 1199767 8029.59 749 734 149.3
A 12 189 7667 46.43 749 734 149.3
A 0 226 7046 42.27 749 734 149.3
B 15 35 137796 980.47 755 737 139.8
B 7 220 100437 713.21 755 737 139.8
B 0 189 32172 224.87 755 737 139.8
C 14 238 117330 677.17 744 753 172.2
C 3 233 89210 513.83 744 753 172.2
C 5 112 7095 36.84 744 753 172.2
D 1 52 97045 530.71 754 734 181.5
D 15 0 28340 152.12 754 734 181.5
D 2 234 21877 116.51 754 734 181.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter